Jan E.

Hammeren Fyr - Hammeren Lighthouse

Hammeren Lighthouse is situated on the heights of Stejlebjerg on the northwestern tip of the island of Bornholm (Denmark). It surrounded by a very scenic natural area with small coniferous vegetation and many old monuments.
Its lantern, 14 feet (4.3 m) in diameter, is 280 feet (85 m) above sea level. When operational, its fixed lamplight was visible at a distance of 23 miles (37 km) but it is inactive since 1990.

If I understood correctly it was put out of service as it was too high and low hanging clouds often obscured it. There is another lighthouse further north which is not so high above the sea: Hammerodde Fyr

But generally you are right. I am sailing yachts now since 30 years - navigation really has changed a lot...